<?php
declare (strict_types = 1);
namespace app\common;

use think\App;

/**
 * 控制器基础类
 */
abstract class Controller
{
    /**
     * Request实例
     * @var \think\Request
     */
    protected $request;

    /**
     * 数据库操作实例
     * @var \think\Db
     */
    protected $db;

    /**
     * 应用实例
     * @var \think\App
     */
    protected $app;

    /**
     * 控制器中间件
     * @var array
     */
    protected $middleware = [];

    /**
     * 验证错误信息
     * @var array
     */
    protected $validateError = '';

    /**
     * 构造方法
     * @access public
     * @param  App  $app  应用对象
     */
    public function __construct(App $app)
    {
        $this->app = $app;
        $this->request = $this->app->request;
        $this->db = $this->app->db;

        // 控制器初始化
        $this->initialize();
    }

    // 初始化
    protected function initialize()
    {

    }

    /**
     * 验证数据
     * @access protected
     * @param  array        $data             数据
     * @param  string|array $validate         验证器名或者验证规则数组
     * @param  array        $message          提示信息
     * @param  bool         $failException    验证失败是否抛出异常
     * @return array|string|true
     * @throws ValidateException
     */
    protected function validate(array $data, $validate, array $message = [], bool $failException = true)
    {
        if (is_array($validate)) {
            $v = new ValidateExt();
            $v->setFieldDeterminer($this->app->http->getName() . '_' . $this->request->controller() . '_' . $this->request->action() . '_');
            $v->rule($validate);
        } else {
            if (strpos($validate, '.')) {
                // 支持场景
                [$validate, $scene] = explode('.', $validate);
            }
            $class = false !== strpos($validate, '\\') ? $validate : $this->app->parseClass('validate', $validate);
            $v = new $class();
            if (!empty($scene)) {
                $v->scene($scene);
            }
        }

        $v->message($message);

        if ($failException) {
            $v->failException();
        }

        $isPassed = $v->check($data);
        if (!$isPassed) {
            $this->validateError = $v->getError();
        }

        return $isPassed;
    }
}
